/Engine/Source/Runtime/Engine/Classes/Components/SphereComponent.h
Returns true if the given transforms result in the same bounds, due to rotational symmetry. For example, this is true for a sphere with uniform scale undergoing any rotation. This is NOT intended to detect every case where this is true, only the common cases to aid optimizations.
virtual bool AreSymmetricRotations ( const FQuat & A, const FQuat & B, const FVector & Scale3D ) const